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BOLT TIGHTENING AT CONNECTIONS
BOLT TIGHTENING AT CONNECTIONS
1. What is this activity?
- Checking and re-verifying the bolt tightening torque.
2. What information and parameters need to be understood to perform this work?
- You must know the type of bolt being tightened (strength grade such as 5.5, 6.8, 8.8, etc.), the size (M6, M8, M10, etc.), the material, and the required tightening torque (in pounds, Newton-meters - Nm).
- The operating range and units of the torque wrench (Nm, Ft.lb, etc.), and the conversion factors between different units in case they do not match.
- What are the specific torque requirements for these connections?
3. Where is this information sourced from?
- Equipment installation manuals, manufacturer recommendations, standard bolt torque lookup tables (such as TCVN - Vietnamese National Standards), etc.
4. What is the priority order of these information sources?
- Equipment installation manual -> Manufacturer recommendations -> Lookup tables...
5. Who needs to understand and provide this information for the work?
- The lead engineer in charge of the work package must fully understand and brief the team.
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